Implement AudioOutputProxy.

media/audio/audio_parameters.cc

Index: media/audio/audio_parameters.cc
diff --git a/media/audio/audio_parameters.cc b/media/audio/audio_parameters.cc
index b0a691b6da616c9c5270961f993c3b1c216df72c..6d178faabca2252b2172615ecaa99a0d006d6c2f 100644
--- a/media/audio/audio_parameters.cc
+++ b/media/audio/audio_parameters.cc
@@ -37,3 +37,27 @@ bool AudioParameters::IsValid() const {
 int AudioParameters::GetPacketSize() const {
   return samples_per_packet * channels * bits_per_sample / 8;
 }
+
+// CompareAudioParams is needed for map to use AudioParameters as a
+// map key.
+bool AudioParameters::CompareAudioParams::operator()(

[scherkus (not reviewing), 2010/11/24 02:01:59]

we should get a unit test slapped on this + GetPacketSize()

should be pretty easy to whip up a simple test case

[Sergey Ulanov, 2010/11/24 03:49:54]

Done.

+    const AudioParameters& a,
+    const AudioParameters& b) const {
+  if (a.format < b.format)
+    return true;
+  if (a.format > b.format)
+    return false;
+  if (a.channels < b.channels)
+    return true;
+  if (a.channels > b.channels)
+    return false;
+  if (a.sample_rate < b.sample_rate)
+    return true;
+  if (a.sample_rate > b.sample_rate)
+    return false;
+  if (a.bits_per_sample < b.bits_per_sample)
+    return true;
+  if (a.bits_per_sample > b.bits_per_sample)
+    return false;
+  return a.samples_per_packet < b.samples_per_packet;
+}